| 聚乙烯醇形成土壤水稳性团粒的效果研究 |
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| 引用本文： | 刘义新,王晓荣.聚乙烯醇形成土壤水稳性团粒的效果研究[J].安徽农业科学,1996,24(3):262-264. |
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| 作者姓名： | 刘义新 王晓荣 |
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| 作者单位： | 合肥经济技术学院!合肥，230052，合肥经济技术学院!合肥，230052 |
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| 摘 要： | 研究了在3种土壤氢离子浓度（10000nmol·L-1、361．2、10μmol·L-1、2种温度（10℃、30℃）下，不同浓度的聚乙烯醇（PVA）形成土壤水稳性团粒的效果。研究了PVA对土壤水分散失量以及酸性～弱酸性土壤氢离子浓度的影响。结果表明：0.01％～0.1％PVA能有效地形成土壤水稳性团拉；1％PVA在上述2种温度、3种氢离子浓度条件下成团效果尤为明显。另外，PVA能减少土壤水分的散失量和增加酸性～弱酸性土壤的氢离子浓度值。
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| 关 键 词： | 聚乙烯醇 土壤 水稳性团粒 |
Study on the Effects of PVA on the Formation of Soil Water-stable Crumbe |
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| Lui yixin, et al.Study on the Effects of PVA on the Formation of Soil Water-stable Crumbe[J].Journal of Anhui Agricultural Sciences,1996,24(3):262-264. |
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| Authors: | Lui yixin |
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| Abstract: | The effects of polyvinyl aliohol (PVA) on the formation of soil water-stable crumbs were determined at two temperatures (10 ℃.,and30℃),three soil H+] (10 000. 361. 2 、10μmol. L-1 ) and a variety of concentration of PVA. The changes of soil water evaporation and acid soil H+] caused by PVA were also discussed. The results indicated that 0. 01 % ~0. 1% PVA can effectively from the soil water-stable crumbs. The effect of the 1. 0%PVA was especially remarkable under these conditions. Furthermore, PVA can increase acid soil H+] and reduce the soil water evaporation. |
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| Keywords: | PVA Soil Water-stable crumbs |
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